When MPNZ's load shedding percentage exceeds 75%, the bar on the graph should move into a red zone. It signals the USI transmission grid is approaching peak loading and as MPNZ's load shedding percentage approaches 100% there is a reasonable likelihood of new chargeable peak periods occurring.

When the end of the bar is red MPNZ is deploying its maximum load control capability (100%). The longer MPNZ load shedding remains at 100% the more likely new chargeable peak periods will occur on the USI grid. This forms a reasonable signal for consumers to manage their load and to continue doing so until the bar on graph moves down from 100% and ceases to be red at the end.

When the whole bar is white (0%) MPNZ is not controlling any load and the grid will be operating at normal load levels. This bar is updated every 5 minutes.

Management Systems Certification

MainPower has integrated quality, environmental and health and safety management into a single cohesive group-wide business management system. This is regularly assessed by a JAS-ANZ Accredited Certification Body to ensure it continues to meet or exceed the requirements of:

AS/NZS/ISO 9001:2008 Quality Management SystemsCertification to this international standard demonstrates our commitment to consistently provide products and services that meet customer and legal requirements. We aim to enhance customer satisfaction through the effective application of the system and to continually improve the way we manage our business.